CVE-2021-47164
kernel: net/mlx5e: Fix null deref accessing lag dev
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 25, 2024
Updated · November 21, 2025
Description
A vulnerability was found in the net/mlx5e driver in the Linux kernel where a NULL pointer dereference was caused when accessing a lag device. This issue occurred because the driver processed an event without confirming the existence of an upper device, which led to potential crashes.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
CVSS / CWE
CVSS 3.1 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference